Crescent Dunes Solar Energy Project

The Crescent Dunes Solar Energy Project is a 110 megawatt (MW) net solar thermal power project with 1.1 gigawatt-hours of energy storage, located near Tonopah, about 190mi northwest of Las Vegas. It is the first utility-scale concentrating solar power (CSP) plant with a central receiver tower and advanced molten salt energy storage technology from SolarReserve. The project, developed by SolarReserve and owned by Tonopah Solar Energy, LLC. was anticipated to cost less than $1 billion. EPC Contractor was ACS Cobra, which carried out the engineering design, procured the equipment and materials necessary, and then constructed and delivered the facility to Tonopah Solar Energy.The project includes 10,347 heliostats that collect and focus the sun's thermal energy to heat molten salt flowing through an approximately 640ft tall solar power tower. The molten salt circulates from the tower to a storage tank, where it is then used to produce steam and generate electricity. Excess thermal energy is stored in the molten salt and can be used to generate power for up to ten hours, including during the evening hours and when direct sunlight is not available. The storage technology also eliminates the need for any backup fossil fuels, such as natural gas. Each heliostat is made up of 35 6×6ft mirror facets, yielding a heliostat overall usable area of 1245sqft. Total solar field aperture adds up to 12882015sqft.